Miniature Proportional Valve



  • 2-5 Millisecond Response Time
  • Unique Proportional Valve Design 
  • Easily Cleaned and Maintained
  • Quiet Operation
  • Low Hysteresis Performance
  • Controls Air, Water, and Other Mediums

Kelly Pneumatics, offers a low volume flow Miniature Proportional Valve utilizing our unique proportional valve design. This non-spool valve architecture employs one moving part, ensuring virtually friction-less proportional control and longevity tested over 100 million cycles. The simplicity of the proportional valve design also ensures relative ease when implementing maintenance or cleaning. We also offer alternative versions that are resistant to both high and low temperatures, therefore performing consistently in many different environments. Available in both a 2-way and 3-way valve, this product can efficiently process Water, Air, Oil, and Hydrogen.  


Valve Function2-Way, Normally Closed
Electrical ConnectionWire Leads or Terminal Spades
Working Pressure-14.7 to 100 psig (6.8 bar) (standard)
500 psig (custom)
Flow Range0-500 milliliters of water per minute,
0-32 liters per minute of air
Orifice Size.009, .013, .025, .040, or .060 inches
Voltage Range0-5, 0-10, and 0-20 VDC
Response Time2 - 5 ms
Port Types#10-32 Inline (Base Mount),
1/16" Manifold Mount,
Seal MaterialBuna-N, Viton, or EPDM
Operating Temp.-40° to 200°F (-40° to 93°C)
Maximum Hysteresis6-10% of full current
Leak RateBubble Tight Seal
Type of OperationDirect solenoid
Filtration40 Micron Recommended
Weight0.15 lbs
Wetted MaterialsCold rolled stainless steel w/ electroless
nickel plating, brass and 304 stainless steel.
Power2.3 watts (max)
PortsSee Dimensions Below



Performance Characteristics


More From This Product Line

Max Flow Rate:32 LPM

Max Flow Rate:140 LPM

Max Flow Rate:300 LPM

Not Sure Which Proportional Valve You Need? Please Tell Us About Your Application. We'll Help You Select the Perfect Valve For Your Project.

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Flow graph